Shanghai Richon Machinery Co., Ltd established in 2005, we specialize in R&D, production and sales of plastic extruders. Our products include SPC floor extrusion production line, PVC foam board extrusion production line, PVC pipe extrusion production line, PE pipe extrusion production line, PVC (WPC) profile extrusion production line, in which the counter-rotating twin-screw extruder is the pioneer in China. We are also one of the  manufacturer of the counter-rotating twin-screw extruder within China. We have extruders' customers in  different countries and regions such as Germany, The United States and Russia.